Hello - Have a 404 Sub with Onkyo TSR 600. TV and equipment is housed in wood entertainment center. Room is 13 x 17.
My question is...the side of the entertainment ctr that I want to place the sub has a wall air vent 1 foot from the floor. Is it OK to put my sub about two feet from this vent? I am concerned about the heat blowing on the sub. I called Polk and they said dont worry about it.
Also, what's all this about a hum? I havent hooked anything up yet and am wondering if I made a mistake with a Polk sub as opposed to something else that does not hum.